virginia tech - basketball practice facility blacksburg, va · gymnasium –electric lighting...

Virginia Tech Basketball Practice Facility Daniel Moynagh 1

Virginia Tech - Basketball Practice FacilityBlacksburg, VA

Daniel MoynaghApril 14, 2010

Professors Houser and Dannerth

Project Scope


1. Electrical Depth1.1 Feeder Cost Analysis1.2 SKM Analysis

2. Lighting Depth2.1 Outdoor Space – Façade2.2 Circulation Space – Lobby2.3 Large Work Space – Gymnasium

2.3.1 M.A.E Daylighting Analysis2.3.2 Structural Breadth*2.3.3 Mechanical Breadth

2.4 Special Purpose Space – Lounge and Locker Room*

*Not included in presentation

Presentation Outline


1. Introduction2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview5. Façade6. Lobby7. Gymnasium

7.1 Lighting7.2 Mechanical

8. Conclusion

Introduction


Location Blacksburg, VA

Size 50,000 ft2

Cost $21 million

Construction Dates April 2008 – August 2009

Delivery Method Design – Bid - Build

Architect Cannon Design

Associate Architect Ballou Justice Upton

General Contractor Whiting Turner

Lighting Consultants Atelier Ten USA LCC

Building Background



8. Conclusion

Location

Coordinates: 37° 13′ 48″ N 80° 25′ 4″ WOrientation: 31° West of True North

www.maps.google.com

Feeder Cost Analysis


Sample Calculation

Overview•Determine if substituting aluminum feeders for copper feeders will provide cost savings

•Consider increase conductor and conduit and conduit size

•Obtain cost data from RSMeans BuidlingConstruction Cost Data

1. Introduction

2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview5. Façade6. Lobby7. Gymnasium


8. Conclusion

Copper Aluminum Cost Difference

Phase Conductor 4/0 AWG 350 KCMIL

Cost $1,365 $960 -$293

Neutral Conductor 4/0 AWG 350 KCMIL

Cost $455 $320 -$98

Ground Conductor 4 AWG 6AWG

Cost $118 $105 -$38

Conduit 1-1/2” 1-1/2”

Cost $1,035 $1,595 +$560

Total: +$7

Example Feeder: 1LNH1 to 2LNH11 Set 3PH 1N 1G, 100’

Total Cost Analysis

Phase Conductors $60,723.74 $39,699.92

Neutral Conductors $14,385.83 $9,511.31

Ground Conductors $6,331.57 $4,992.70

Conduit $48,304.63 $82,569.91

Total: $129,745.77 $136,773.84

Total Cost Increase = $7,028.07

Switching to aluminum feeders does not provide and cost savings, therefore use copper.

SKM Systems Analysis


Arc Flash Analysis

Design Goals•Analyze electrical distribution system

•Comprehensive short circuit analysis, arc fault study, and protective device coordination

Protective Device Coordination Study

1. Introduction2. Feeder Cost Analysis

3. SKM Analysis4. Lighting Overview5. Façade6. Lobby7. Gymnasium


8. Conclusion

Lighting Overview


Overview•Highlight architectural elements of the building

•Complement the interior design

•Use energy efficient design solutions

•Create an environment comfortable for the athletes and that can be used as a recruiting tool for potential players

1. Introduction2. Feeder Cost Analysis3. SKM Analysis

4. Lighting Overview5. Façade6. Lobby7. Gymnasium


8. Conclusion

Façade


Design Goals•Draw visitors into the building

•Illuminate the surfaces within the lobby so that it glows from within

•Highlight building materials – bring out the texture of the “Hokie Stone”

Design Criteria•LPD = 5 W/ft

Entrance Facade “Hokie Stone”

http://www.virginiaplaces.org/

Courtesy Canon Design

1. Introduction2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview

5. Façade6. Lobby7. Gymnasium


8. Conclusion

Façade


Luminaires

In-ground wall washer 20W/842 T4 Metal Halide Lamp

In-ground wall washer 35W/842 T4 Metal Halide Lamp

Lighting Power Density = 2.6 W/ft




8. Conclusion

Façade


Entrance Rendering Façade False Color - Illuminance





8. Conclusion

Façade


Entrance Rendering Entrance Rendering





8. Conclusion

Lobby


Lobby Graphics – South Wall Lobby Graphics – East Wall

1. Introduction2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview5. Façade

6. Lobby7. Gymnasium


8. Conclusion

Lobby


Lobby Graphics – South Wall Lobby Graphics – East Wall

Design Goals•Highlight the graphics in the space to celebrate the tradition of Virginia Tech Basketball

•Orient visitors to circulation of the building

•Illuminate wall surfaces to create glow from within

Design Criteria•Horizontal Illuminance = 100 lux

•LPD = 1.1W/ft2




8. Conclusion

Lobby


Luminaires

Wall Slot FO32/841 Linear Fluorescent

Recessed Wall Washer (2) CF32DT 841

Recessed Downlight 35W/842 T4 Metal Halide

Surface Mounted Spot Light 35W/842 T4 Metal Halide

Recessed Spot Light 35W/842 T4 Metal Halide

Recessed Wall Washer FP28/841 Linear FluorescentLighting Power Density = 1.09 W/ft2




8. Conclusion

Lobby


Lobby Rendering

Lighting Power Density = 1.09 W/ft2

Lobby Rendering




8. Conclusion

Lobby


Lobby Rendering


Entrance False Color - Illuminance




8. Conclusion

Lobby


Lobby Rendering


View From Exterior – False Color




8. Conclusion

Gymnasium


Gymnasium Graphics – East Wall Gymnasium Graphics – South Wall

1. Introduction2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview5. Façade6. Lobby

7. Gymnasium7.1 Lighting7.2 Mechanical

8. Conclusion

Gymnasium - Lighting


Design Goals•Bring daylight into the space to reduce energy use while maintaining appropriate light levels for basketball playing

Design Criteria•Horizontal Illuminance = 800 lux•Illuminance Uniformity

•CV= 0.21•Emax/Emin=2.5:1 or less

•LPD =2.3 W/ft2



8. Conclusion

Gymnasium Graphics – East Wall Gymnasium Graphics – South Wall

Gymnasium – Electric Lighting


Luminaires

High Bay With Protective Cage (6) FP 54T5HO 8411. Introduction2. Feeder Cost Analysis3. SKM Analysis4. Lighting Overview5. Façade6. Lobby


8. Conclusion

Gymnasium – Electric Lighting


Electric Light Levels (lux)

EAverage 877 lux

Emax/Emin 1.52

C.V. 0.09

LPD 1.35 W/ft2



8. Conclusion

Gymnasium – M.A.E - Daylighting


Skylight Design Data

Dimensions 10’ x 12’

Skylight/Floor Area 11.1%

τ 0.30

ρ 0.80

U 0.23 Btu/hr-sq ft °F

SHGC 0.26

Daylight Autonomy DA Continuous



8. Conclusion



Critical Point Location Daylighting Controls

8 Circuit Dimming Panel

Low Voltage Control Interface

Micro PS Photocell – Closed Loop Proportional Set Point Algorithm



8. Conclusion



Daylight Tracking

March 21: 7:00 am – 7:00 pm



8. Conclusion

Percent Light Output

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

% L

igh

t O

utp

ut

Dimming Level



Energy Savings

Annual Energy Consumption

All Lighting – Base 116,242 kWh

Dimmed Zone – Base 64,579 kWh

Dimmed Zone – Algorithm 21,028 kWh

Savings 43,550 kWh

Dimmed Zone 67.4%

Total 37.5%

SkyCalc Predicted Total Savings 28,311 kWh



8. Conclusion

Gymnasium – Mechanical


Existing System


7. Gymnasium7.1 Lighting

7.2 Mechanical8. Conclusion

Overview•Analyze the of the gymnasium skylighting design on the cooling system

•Use build an energy modeling to determine increase in loading

Cooling Data

Equipment Scroll Air Cooled Chiller

Capacity 141.5 ton

Peak Cooling Load 155.1 ton



Energy Model






Roof U Value 0.0440 BTU/hr ft2⁰F

Exterior Wall U Value 0.0544 BTU/hr ft2⁰F

Interior Wall U Value 0.0616 BTU/hr ft2⁰F

Floor 0.0440 BTU/hr ft2⁰F

Cooling Setpoint 74⁰

Internal Gains

Lighting 1.4 W/ft2

People

Sensible Gain 710.0 BTU/hr person

Latent Gain 1090.0 BTU/hr person

Occupancy Density 50 people

Increase in Peak Load 11.9 ton



Chiller Redesign






Cooling Data

Equipment Scroll Air Cooled Chiller

Peak Cooling Load 167 ton

New Chiller Size 172.2 ton

Conclusion


Acknowledgements



8. Conclusion

Thank you to the following for support throughout the year:

•AE Faculty and Staff•Professors Houser, Mistrick, and Dannerth

•Cannon Design•Kevin Ledoux and all the engineers in the Boston Office

•Fellow AE Lighting/Electrical Students

•All Family and Friends

Questions/Comments?

virginia tech - basketball practice facility blacksburg, va · gymnasium –electric lighting...

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